package com.heima.article.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.article.mapper.ApArticleConfigMapper;
import com.heima.article.mapper.ApArticleContentMapper;
import com.heima.article.mapper.ApArticleMapper;
import com.heima.article.mapper.AuthorMapper;
import com.heima.article.service.ApArticleService;
import com.heima.article.service.GeneratePageService;
import com.heima.common.constants.article.ArticleConstants;
import com.heima.common.exception.CustException;
import com.heima.feigns.wemedia.WemediaFeign;
import com.heima.feigns.admin.AdminFeign;
import com.heima.model.admin.pojos.AdChannel;
import com.heima.model.article.dtos.ArticleHomeDTO;
import com.heima.model.article.pojos.ApArticle;
import com.heima.model.article.pojos.ApArticleConfig;
import com.heima.model.article.pojos.ApArticleContent;
import com.heima.model.article.pojos.ApAuthor;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.pojos.WmNews;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;


@Service
@Slf4j
public class ApArticleServiceImpl extends ServiceImpl<ApArticleMapper, ApArticle> implements ApArticleService {
    @Autowired
    GeneratePageService generatePageService;
    /**
     * 保存或修改文章
     * @param newsId   文章 id
     */

    @Autowired
    WemediaFeign wemediaFeign;
    @Autowired
    AdminFeign adminFeign;
   @Autowired
    AuthorMapper authorMapper;
   @Autowired
    ApArticleConfigMapper apArticleConfigMapper;
   @Autowired
    ApArticleContentMapper apArticleContentMapper;
    @Transactional
    @Override
    public void PublishArticle(Integer newsId) {
        //1:参数检查
        if(newsId==null){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
        }
        //2:查询自媒体文章
        WmNews wmNews=getWmNews(newsId);
        //3:封装 ApArticle
        ApArticle apArticle=getApArticle(wmNews);
        //4:保存或修改 Article 信息
        saveOrUpdateArticle(apArticle);
        //5: 保存关联配置和内容信息
        saveConfigAndContent(wmNews,apArticle);
        //6: : 文章页面静态化
            generatePageService.generateArticlePage(wmNews.getContent(),apArticle);

        //7 更新 wmNews状态  改为9  并设置articleId
        updateWmNews(newsId,wmNews,apArticle);

        //8: TODO:  通知es索引库添加文章索引
    }


    @Autowired
    ApArticleMapper apArticleMapper;
    @Value("${file.oss.web-site}")
    private String webSite;
    @Value("${file.minio.readPath}")
    String readPath;
    /**
     * 根据参数加载文章列表
     * @param loadtype  0:加载更多文章    1:加载最新文章
     * @param dto
     * @return
     */
    @Override
    public ResponseResult load(Short loadtype, ArticleHomeDTO dto) {
        //1:参数检查
        //页大小
        Integer size = dto.getSize();
        if(size==null || size<=0){
            size=10;
        }
        dto.setSize(size);
        //频道
        if(StringUtils.isBlank(dto.getTag())){
            dto.setTag(ArticleConstants.DEFAULT_TAG);
        }
        //时间
        if(dto.getMaxBehotTime()==null){
            dto.setMaxBehotTime(new Date());
        }
        if(dto.getMinBehotTime()==null){
            dto.setMinBehotTime(new Date());
        }
        //类型判断
        if(!loadtype.equals(ArticleConstants.LOADTYPE_LOAD_MORE)&&
             !loadtype.equals(ArticleConstants.LOADTYPE_LOAD_NEW)){
            loadtype=ArticleConstants.LOADTYPE_LOAD_MORE;
        }
        //2: 执行查询
        List<ApArticle> articleList = apArticleMapper.loadArticleList(dto, loadtype);
        //==================添加静态页面访问前缀  ===============
        for (ApArticle apArticle : articleList) {
            apArticle.setStaticUrl(readPath+apArticle.getStaticUrl());
        }
        //3:返回结果
        ResponseResult result = ResponseResult.okResult(articleList);
        result.setHost(webSite);
        return result;
    }


    /**
     * 查询自媒体文章
     * @param newsId  文章id
     * @return
     */
    private WmNews getWmNews(Integer newsId) {
        ResponseResult<WmNews> wmNewsResult = wemediaFeign.findWmNewsById(newsId);
        if(!wmNewsResult.checkCode()){
           log.error("文章发布失败 远程调用自媒体文章接口失败 文章: {}",newsId);
           CustException.cust(AppHttpCodeEnum.REMOTE_SERVER_ERROR,"远程调用自媒体文章接口失败");
        }
        WmNews wmNews=wmNewsResult.getData();
        if(wmNews==null){
            log.error("文章发布失败 未获取到自媒体文章信息  文章id: {}",newsId);
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"未查询到自媒体文章");
        }
        //判断状态是否为 4 或 8    如果不是  不处理
        short status = wmNews.getStatus().shortValue();
        if(status!=WmNews.Status.ADMIN_SUCCESS.getCode()
              && status!=WmNews.Status.SUCCESS.getCode()){
            log.error("文章发布失败 文章状态不为 4 或 8， 不予发布 , 文章id : {}",newsId);
            CustException.cust(AppHttpCodeEnum.DATA_NOT_ALLOW,"自媒体文章状态错误");
        }
            return  wmNews;
    }

    /**
     * 封装apArticle
     * @param wmNews
     * @return
     */
    private ApArticle getApArticle(WmNews wmNews) {
        ApArticle apArticle =new ApArticle();
        //拷贝属性
        BeanUtils.copyProperties(wmNews,apArticle);
        apArticle.setId(wmNews.getArticleId());
        apArticle.setFlag((byte)0);  //普通文章
        apArticle.setLayout(wmNews.getType());  //布局
        //远程查询频道信息
        ResponseResult<AdChannel> channelResult = adminFeign.findOne(wmNews.getChannelId());
        if(!channelResult.checkCode()){
            log.error("文章发布失败 远程调用查询频道出现异常， 不予发布 , 文章id : {}  频道id : {}",wmNews.getId(),wmNews.getChannelId());
            CustException.cust(AppHttpCodeEnum.REMOTE_SERVER_ERROR,"远程调用查询频道出现异常");
        }
        AdChannel channel = channelResult.getData();
        if(channel==null){
            log.error("文章发布失败 未查询到相关频道信息， 不予发布 , 文章id : {}  频道id : {}",wmNews.getId(),wmNews.getChannelId());
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"未查询到相关频道信息");
        }
        apArticle.setChannelName(channel.getName());
        //设置作者信息
        ApAuthor apAuthor = authorMapper.selectOne(Wrappers.<ApAuthor>lambdaQuery()
                .eq(ApAuthor::getWmUserId, wmNews.getUserId()));
        if(apAuthor==null){
            log.error("文章发布失败 未查询到相关作者信息， 不予发布 , 文章id : {}  自媒体用户id : {}",wmNews.getId(),wmNews.getUserId());
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"根据自媒体用户，查询关联作者信息失败");
        }
            apArticle.setAuthorId(Long.valueOf(apAuthor.getId()));
                apArticle.setAuthorName(apAuthor.getName());
                return apArticle;
    }

    /**
     * 保存或修改文章信息
     * @param apArticle
     */
    private void saveOrUpdateArticle(ApArticle apArticle) {
        //判断 wmNews之前是否关联  articleId
        if(apArticle.getId()==null){
            //无关联  新增 articleId
            //保存文章
            apArticle.setCollection(0); //收藏数
            apArticle.setLikes(0);  //点赞数
            apArticle.setComment(0); //评论数
            apArticle.setViews(0);//阅读数
            save(apArticle);
        }else {
            //有关联  修改 article
            //修改文章  删除之前关联的配置信息   内容信息
            ApArticle article = getById(apArticle.getId());
            if(article==null){
                CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"关联的文章不存在");
            }
            updateById(apArticle);
            apArticleConfigMapper.delete(Wrappers.<ApArticleConfig>lambdaQuery()
                             .eq(ApArticleConfig::getArticleId,apArticle.getId()));
            apArticleContentMapper.delete(Wrappers.<ApArticleContent>lambdaQuery()
                             .eq(ApArticleContent::getArticleId,apArticle.getId()));
        }

    }

    /**
     *  保存  配置  和   内容信息
     * @param wmNews
     * @param apArticle
     */
    private void saveConfigAndContent(WmNews wmNews, ApArticle apArticle) {
        //添加配置
        ApArticleConfig apArticleConfig =new ApArticleConfig();
        apArticleConfig.setArticleId(apArticle.getId());
        apArticleConfig.setIsComment(true);
        apArticleConfig.setIsForward(true);
        apArticleConfig.setIsDown(true);
        apArticleConfig.setIsDelete(true);
        apArticleConfigMapper.insert(apArticleConfig);
        //添加文章详情
        ApArticleContent apArticleContent =new ApArticleContent();
        apArticleContent.setArticleId(apArticle.getId());
        apArticleContent.setContent(wmNews.getContent());
        apArticleContentMapper.insert(apArticleContent);
    }

    /**
     * 修改自媒体文章
     * @param newsId
     * @param wmNews
     * @param apArticle
     */
    private void updateWmNews(Integer newsId, WmNews wmNews, ApArticle apArticle) {
        wmNews.setStatus(WmNews.Status.PUBLISHED.getCode());
        wmNews.setArticleId(apArticle.getId());
        ResponseResult updateWmNews = wemediaFeign.updateWmNews(wmNews);
        if(!updateWmNews.checkCode()){
            log.error("文章发布失败 远程调用修改文章接口失败， 不予发布 , 文章id : {} ",newsId);
            CustException.cust(AppHttpCodeEnum.REMOTE_SERVER_ERROR,"远程调用修改文章接口失败");
        }
    }

}